Using Joomla Standard Captcha

Hi, I don't understand why it does not seem to be possible to use with EasyBlog the captcha being set as standard captcha in Joomla, many other good apps have this option. I use Key Captcha on the site which is far more customer-friendly than Recaptcha and others. Why is it not possible? Will you enable the option "standard captcha" soon?
Thanks
Chris